Claims:

1. An aerosol generating article (100) for an aerosol generating device comprising:
atleast three segments, wherein the first segment (101) having an aerosol generating substrate (101);
a second segment (102), substantially tubular, placed immediately downstream to the aerosol generating segment (101); and
the third segment (103) having a filtering material, preceded by the tubular segment (102), wherein said segments have different size dimensions.

2. An aerosol generating article (100) for an aerosol generating device as claimed in claim 1, wherein said first segment (101) comprises the reconstituted tobacco packed at high densities.

3. An aerosol generating article (100) for an aerosol generating device as claimed in claim 1, wherein said tubular segment (102) comprises ventilation holes (102a) for dilution, which further reduces the temperature of the aerosol generated from the preceding segment (101).

4. An aerosol generating article (100) for an aerosol generating device as claimed in claim 3, wherein said tubular segment (102) acts as cooling segment, which is made up of paper tube or cellulose acetate and the like.

5. An aerosol generating article (100) for an aerosol generating device as claimed in claim 1, wherein said third segment (103) comprising a filtering material selected from cellulose acetate, PLA and combinations thereof.

6. An aerosol generating article (100) for an aerosol generating device as claimed in claim 4, wherein said third segment (103) further comprises a flavorant material encapsulated in a capsule (105), thread, flavored sheets / inserts and the like, embedded onto the filtering material.
, Description:TECHNICAL FIELD
The present disclosure generally relates to an aerosol generating device. In particular, the present disclosure relates to the construct of an aerosol generating article an aerosol generating device.

BACKGROUND
Various aerosol-generating articles for use in electronic heating devices are known. They comprise a plurality of segments, including an aerosol-forming substrate and a mouthpiece. Further segments may be aerosol treating segments, for example, for altering aerosol characteristics. Aerosol-generating articles are mass products. Typically in such heated aerosol- generating articles, an inhalable aerosol is generated by the transfer of heat from a heat source to an aerosol-forming substrate, which may be located within, around or downstream of the heat source. During consumption of the aerosol- generating article, volatile compounds are released from the aerosol-forming substrate by heat transfer from the heat source and entrained in air drawn through the article. As the released compounds cool, they condense to form an aerosol.

Alternate devices for delivery nicotine, such as electronic vaping devices and e-cigarettes have not been able to meet consumer satisfaction. One possible reason can be their inability to deliver the required tobacco taste/flavor to the consumer as that by a conventional cigarette. Some of the existing electronic and/or carbon heat-not-burn products heat tobacco substrate to generate aerosol for meeting consumer requirements.

Unlike combustion in a conventional cigarette, heat-not-burn products heat tobacco to high temperatures (around 350 0C) to release nicotine and flavor without burning/consuming the tobacco rod. For consumer to experience a similar experience as that in a conventional cigarette, the aerosol needs to be cooled down without filtering the nicotine content. One way is to cool by providing high ventilation; however, that results in reducing the nicotine content.

Thus, there is a need to design a filter that provides the desired effect and at the same time, provides ease of manufacturing.

OBJECT OF THE INVENTION:
An object of the present invention is to provide an aerosol generating article for an aerosol generating device, wherein the said article comprises atleast three segments.

It is yet another object of the present invention is to provide an aerosol generating article comprising the combination of an aerosol generating substrate, tubular filter which acts as a cooling segment and a regular filter segment for filtration.

An object of the present invention is to provide a filter design for cooling the aerosol without filtering the nicotine content.

An object of the present invention is to provide a filter design which provides aerosol at a comfortable temperature without impacting the nicotine deliveries.

An object of the invention is to provide a simple filter design with ease of manufacturing.

SUMMARY
This summary is provided to introduce a selection of concepts in a simplified format that is further described in the detailed description. This summary is not intended to identify key or essential inventive concepts.

In accordance with the purposes of the invention, the present invention as embodied and broadly described herein provides a design of a filter for an aerosol generating device for nicotine delivery. The invention is various combinations of filter segments that can cool the aerosol without significant filtration of smoke nicotine. Thus, the issue of hot puff due to high smoke temperature doesn’t rise and at the same time, the consumer is satisfied with the impact. It focuses on the choice of filter segments and sequence in which the same are arranged to achieve cooling effect.

Thus according to one aspect of the present invention there is a provide an aerosol generating article (100) for an aerosol generating device comprising:

atleast three segments, wherein the first segment (101) having an aerosol generating substrate (101);
a second segment (102), substantially tubular, placed immediately downstream to the aerosol generating segment (101); and
the third segment (103) having a filtering material, preceded by the tubular segment (102), wherein said segments have different size dimensions.

In one implementation, the present disclosure provides at least threesegments, wherein the first segment comprises of an aerosol generating substrate.

In one implementation, the present disclosure provides a second segment configured for cooling the aerosol generating substrate.

In one implementation, the present disclosure provides a third segment with a filtering material, preceded by the second segment.

In another implementation of the present invention, the second segment is placed immediately downstream to the first segment.

In one another implementation of the present invention, second segment has ventilation holes running along both its length, configured for dilution, which further reduces the temperature of the aerosol generated from the preceding segment.

In another implementation of the present invention, first segment comprises of reconstituted tobacco packed at high densities.

The inventiveness of the invention lies in placing a tubular segment immediately downstream the aerosol generating substrate to provide an internal surface area for aerosol to exchange heat and in process cooling the smoke. The aerosol generating substrate comprises of reconstituted tobacco packed at high densities. Also, the tube filter has ventilation holes to dilute and cool the aerosol.

Other aspects, advantages, and salient features of the invention will become apparent to those skilled in the art from the following detailed description, which taken in conjunction with the annexed drawings, discloses exemplary embodiments of the invention.

BRIEF DESCRIPTION OF FIGURES
It is appreciated that the drawings provided in the present disclosure only illustrate application examples of the present disclosure and are therefore not to be construed as limiting its scope. The foregoing disclosure provides additional information with additional specificity and detail with the accompanying drawings, which are listed below for quick reference.

Fig. 1 illustrates a schematic layout of the aerosol generating device with its filter segments, in accordance with an embodiment of the present disclosure.

Fig. 2 illustrates a schematic layout of the aerosol generating device with its filter segments and flavoring capsule, in accordance with an embodiment of the present disclosure.

It may be noted that the one or more elements may have been represented in the drawings by conventional symbols, and the drawings may show only those specific details that are pertinent to understanding of the embodiments of the present disclosure so as not to obscure the drawings with details that will be readily apparent to those of the ordinary skilled in the art having the benefit of the description herein.

DETAILED DESCRIPTION
It should be understood at the outset that although illustrative implementations of the present disclosure are illustrated below, the present invention may be implemented using any number of techniques, whether currently known or in existence. The present disclosure should be in no way limited to illustrative implementations, drawings, and techniques, illustrated below, including the exemplary design and implementation illustrated and described herein, but may be modified within the scope of equivalents.

Unless otherwise defined, all terms and especially technical and/or scientific terms, used herein, may be taken to have the same meaning as commonly understood by one having an ordinarily skilled in the art.

Reference is made herein to some “embodiments”. It should be understood that an embodiment is an example of a possible implementation of any features and/or elements presented in the foregoing claims. Some embodiments have been described for the purpose of illuminating one or more potential ways in which the specific features and/or elements of the foregoing claims fulfill the requirements of uniqueness, utility, and non-obviousness.

The present disclosure generally relates to an aerosol generating device. In particular, the present disclosure relates to the construct of an aerosol generating article an aerosol generating device, wherein said article comprises the combination of an aerosol generating substrate, tubular filter which acts as a cooling segment and a regular filter segment for filtration.

Further the issue of hot puff due to high smoke temperature doesn’t rise and at the same time, the consumer is satisfied with the impact.it focuses on the choice of filter segments and sequence in which the same are arranged to achieve cooling effect.

The aerosol-generating device comprises of the two ends a proximal end (103) through which aerosol exits the aerosol- generating device and is delivered to a user and a distal (101) end opposite to the proximal end. In use, a user may draw on the proximal end. The proximal end may also be referred to as the mouth end, mouthpiece or the downstream end and is downstream of the distal end. The distal end may also be referred to as the upstream end and is upstream of the proximal end. As used herein, the terms 'upstream' and 'downstream' are used to describe the relative positions of elements or segments, or portions of elements or segments, of the aerosol-generating articles in relation to the direction in which a user draws on the aerosol-generating device during use thereof.

The tobacco element is arranged upstream of the mouthpiece element. The tobacco element includes the distal end (101) of the aerosol-generating device. The mouthpiece element includes the proximal end (103) of the aerosol-generating device.

In one implementation, the present disclosure provides at least three segments, wherein the first segment (101) comprises of an aerosol generating substrate.

In one implementation, the present disclosure provides a second segment (102) which is a tubular segment configured for cooling the aerosol generating substrate.

In one implementation, the present disclosure provides a third segment (103) with a filtering material, preceded by the second segment.

In another implementation of the present invention, the second segment (102) is placed immediately downstream to the first segment (101).

In one another implementation of the present invention, second segment (102) has ventilation holes (102a) running along both its length, configured for dilution, which further reduces the temperature of the aerosol generated from the preceding segment.

In another implementation of the present invention, first segment (101) comprises of reconstituted tobacco packed at high densities.

In one implementation of the present invention the third segment (103) includes a filtering material and acts as the mouthpiece of the device. It further comprises a flavorant material encapsulated in a capsule (104), thread, flavored sheets/ inserts and the like, embedded onto the filtering material. The filter material for the device is selected from cellulose acetate, PLA and combinations thereof.

In one implementation of the present invention, the three segments have different size dimensions. The size of first segment (101) may vary from 12-20mm in length, the size of the second segment may vary from 15-60 mm and the size of the third segment may vary from 8-20mm. This filter design provides aerosol at a comfortable temperature without impacting the nicotine deliveries.